Cita APA (7a ed.)

Hecht, S. S. (1999). Tobacco smoke carcinogens and lung cancer. [s.n.].

Cita Chicago Style (17a ed.)

Hecht, Stephen S. Tobacco Smoke Carcinogens and Lung Cancer. [S.l.]: [s.n.], 1999.

Cita MLA (9a ed.)

Hecht, Stephen S. Tobacco Smoke Carcinogens and Lung Cancer. [s.n.], 1999.